CODEWITHSUNDEEP
javaspringspring-boothibernatespring-mvc
Christopher
Christopher

Reputation: 315

I get the 'Error creating bean with name 'requestMappingHandlerAdapter' defined in class path resource' for my spring boot application

I am having a hard time staring up my server with spring. I looked up similar errors to mine and it seemed it had to do with the way I used RequestMapping. Despite having tried various methods to define my routes, I still can't figure out what seems to be the problem. Any ideas?

This is my error message:

Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'requestMappingHandlerAdapter' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Unsatisfied dependency expressed through method 'requestMappingHandlerAdapter' parameter 1; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mvcConversionService' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.format.support.FormattingConversionService]: Factory method 'mvcConversionService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'qualificationRepository' defined in com.salay.christophersalayportfolio.repositories.QualificationRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Cannot resolve reference to bean 'jpaMappingContext' while setting bean property 'mappingContext'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is org.hibernate.AnnotationException: mappedBy reference an unknown target entity property: com.salay.christophersalayportfolio.models.ProgrammingLanguage.dissertation in com.salay.christophersalayportfolio.models.Dissertation.programmingLanguages
Related cause: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'requestMappingHandlerAdapter' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Unsatisfied dependency expressed through method 'requestMappingHandlerAdapter' parameter 1; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mvcConversionService' defined in class path resource [org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration$EnableWebMvcConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.format.support.FormattingConversionService]: Factory method 'mvcConversionService' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'qualificationRepository' defined in com.salay.christophersalayportfolio.repositories.QualificationRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Cannot resolve reference to bean 'jpaMappingContext' while setting bean property 'mappingContext'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is org.hibernate.AnnotationException: mappedBy reference an unknown target entity property: com.salay.christophersalayportfolio.models.ProgrammingLanguage.dissertation in com.salay.christophersalayportfolio.models.Dissertation.programmingLanguages

My TaskController

import com.salay.christophersalayportfolio.models.Task;
import com.salay.christophersalayportfolio.repositories.TaskRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Optional;

@RestController
@RequestMapping(path = "/api/v1/tasks")
public class TaskController {

    @Autowired
    private TaskRepository taskRepository;

    @RequestMapping(value = "/add", method = RequestMethod.POST)
    public @ResponseBody String add(@RequestBody Task task) {
        taskRepository.save(task);
        return "Successfully saved the task to the database.";
    }

    @RequestMapping(value = "/{id/", method = RequestMethod.GET)
    public Task getById(@PathVariable int id){

        Optional<Task> task = taskRepository.findById(id);

        if(!task.isPresent()){
            throw new NullPointerException();
        }
        else {
            return task.get();
        }
    }

    @RequestMapping(value = "/all/", method = RequestMethod.GET)
    public List<Task> getAll() {
        return taskRepository.findAll();
    }

}

My ProgrammingLanguagesController:

package com.salay.christophersalayportfolio.controllers;

import com.salay.christophersalayportfolio.models.ProgrammingLanguage;
import com.salay.christophersalayportfolio.repositories.ProgrammingLanguageRepositories;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Optional;

@RestController
@RequestMapping(path = "/api/v1/programmingLanguages")
public class ProgrammingLanguageController {

    @Autowired
    private ProgrammingLanguageRepositories plRepository;

    @RequestMapping( value= "/add", method = RequestMethod.POST)
    public @ResponseBody String add(@RequestBody ProgrammingLanguage pl){
        plRepository.save(pl);
        return "This programming language has been successfully saved";
    }


    @RequestMapping( value = "/{id}/", method = RequestMethod.GET)
    public ProgrammingLanguage getById(@PathVariable int id){
        Optional<ProgrammingLanguage> pl = plRepository.findById(id);

        if( !pl.isPresent()){
            throw new NullPointerException();
        }
        else {
            return pl.get();
        }
    }

    @RequestMapping( value = "/all", method = RequestMethod.GET)
    public List<ProgrammingLanguage> getAll(){
        return plRepository.findAll();
    }
}

Below are my entities:

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class ProgrammingLanguage {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;
    public String name;
    public String image;
}

import javax.persistence.*;
import java.util.Set;

@Entity
public class Dissertation {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;
    private int qualificationId;
    public String title;

    @OneToMany(mappedBy="dissertation")
    public Set<ProgrammingLanguage> programmingLanguages;
    public Set<Tool> tools;
}

package com.salay.christophersalayportfolio.models;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class Task {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;
    private int experienceId;
    private int projectId;
    public String description;
}

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class Task {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;
    private int experienceId;
    private int projectId;
    public String description;
}

import javax.persistence.*;
import java.util.Set;

@Entity
public class Project {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;
    public String name;
    public String description;
    public String client;

    @OneToMany(mappedBy = "project")
    public Set<ProgrammingLanguage> programmingLanguages;

    @OneToMany(mappedBy = "project")
    public Set<Tool> tools;

    @OneToMany(mappedBy = "project")
    public Set<String> images;

    @OneToMany(mappedBy = "project")
    public Set<Task> tasks;
}

My pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.0.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.salay</groupId>
    <artifactId>christopher-salay-portfolio</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>christopher-salay-portfolio</name>
    <description>Back-end application for my portfolio</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!-- https://mvnrepository.com/artifact/com.microsoft.sqlserver/mssql-jdbc -->
        <dependency>
            <groupId>com.microsoft.sqlserver</groupId>
            <artifactId>mssql-jdbc</artifactId>
            <version>8.3.1.jre14-preview</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

Upvotes: 0

Views: 12065

Answers (1)

arturo.bhn
arturo.bhn

Reputation: 149

The problem is not in your request mapping, your app does not start because of an issue in your entity mapping, please double check your mappings as stated in your error: mappedBy reference an unknown target entity

org.hibernate.AnnotationException: mappedBy reference an unknown target entity property: com.salay.christophersalayportfolio.models.ProgrammingLanguage.dissertation in com.salay.christophersalayportfolio.models.Dissertation.programmingLanguages

It seems your class com.salay.christophersalayportfolio.models.ProgrammingLanguage does not have a property named dissertation

Otherwise, share your model to take a look!

Upvotes: 2

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